81520575

素因数分解:

$3^1\times 5^2\times {\mathrm{67}}^1\times {\mathrm{16223}}^1$

素因数の和:16303

約数の個数: 24

約数和(自身を含む): 136800768

約数和(自身を除く): 55280193

約数列:

[1, 3, 5, 15, 25, 67, 75, 201, 335, 1005, 1675, 5025, 16223, 48669, 81115, 243345, 405575, 1086941, 1216725, 3260823, 5434705, 16304115, 27173525, 81520575]

約数ペア:

[(1, 81520575), (3, 27173525), (5, 16304115), (15, 5434705), (25, 3260823), (67, 1216725), (75, 1086941), (201, 405575), (335, 243345), (1005, 81115), (1675, 48669), (5025, 16223)]